Sectional liquid-heating apparatus



I Nov. 18, 1930,

w. A. CROSS 1,781,915 SECTIONAL LIQUID Han-ma APPARATUS Filed l|ay 7, 1928 2 Shuts-Sheet 1 Inventor. William A. Cross byiaudwuw w. A. CROSS 1,781,915 SECTIONAL LIQUID HEATING APPARATUS Nov. 18, 1930.

Filed New 7, 1928 2 Sheets-Sheet 2 la 10 H Invenror. William A. Cross by uol wkw Anya.

Patented Nov. 18, 1930 I UNITEDSTATES PATENT O ICE wiLL Am A. (moss, or EAST ivriL'T-oN, MASSACHUSETTS sEcT oiv n LIQUID-HEATING APPARATUS Application filed May;?, 1928. Serial No. 275,603.

This invention relates to improvements in i A further object of the invention is to pro% sectional liquid heating apparatus and the principal obj ectthereof is to provide a heating apparatus formed in sections adaptedto be readily assembled and which when'assenibled will'provide means for transmitting a maximum amount of heat to the liquid.

A further object of the invention is topro- 'vide a heating apparatus or" this character comprising a plurality of members having chambers for the liquid tobe heated and in which the walls of said members will present amaximumamount of surface to the heating flames and to the hot products of combustion.

'A'further object of the invention is to provide a heating apparatus comprising a fire- ,box having inner and outer surrounding water legs with a space therebetween forming a flue for the products of combustion, with a suitable hollow dome superimposed upon said waterilegs and comniunicatii gtherewith, and operable to direct the products of jcombustion downwardly through the flue which is located between the inner and outer 'z-sfwater legs.

' A further object of the invention is to pr0-' vide an apparatus of the character last :de-.

scribed with additional capacity by providing one, or preferably a plurality of, wall sections comprising inner and outer communicating hollow walls; withxfmeans for establishing 1 communication between the chambers of walls and said water-legs; V I A further object ofrthe invention isto pro-' vide means for further increasing the capacity said of the apparatus byproviding one,.or preierably a plurality of heating .units linounted upon the fire-box andhavingradially extending chambers having walls presenting'a large heat-absorbing area,- with said chainbers .communicating both with the water legs and with the. dome of the heating apparatus; A J I A further object of 'the inventionis to pro; vide an apparatus ofthechar'acter described with IDBZIIIS for preheating the air which is admitted tos'upport combustion, this preferablybeing accomplishedby conducting the air through a conduit which extends through a portion of the stack leading from the line of the heating apparatus. i 1

established between the water chambers of lines 66 illustratedin Fig. 2.r

vide aconstructionof the character described may be readily assembled and cominui-iication the varioussections by means of push nipples.

invention will more fully appear-from the V. These and otherobjects and features of the following description andthe accompanying drawings, and Willbe particularly pointed. T51) out in the claims.

preferred embodiment of the invention is illustrated in the accompanying: drawings, in. i

i Fig. 4: is a sideelev tion ofthe heating apfcentral vertical sectionalview of sectional view on pa'rat'usshown-in- Fig; lipartl y broken away. i I

and illustrating in section particularly a portion of the stack'and in elevation the air inlet conduit enteiiding through said p ortion'of' "the stack;

Sis a sectional view on 5 5 Fig. i

1 viewed downwardly; and, I Fig. 6-is a detail sectionalview. on curved I The heatingapparatusillustratedin the ac-.

companyin g drawings comprises a hollow base '1, adaptedto be mounted on a suitable" support'andpro'vide'd with shoulders 2 and V with apreferably -cyli'iidri ca1 section-f a stacln which in turn'coinnnniicates'with a 'hoi'izontal section fi leading to an upwardly extending chimney 7 (not shown) Any suitable heating ineanslmay be pro? vided. As illustratedthe'heating means com prises a pipe Tleadingthrough the front wall I 8 oi? the base 1' to aburner' E) which is illi s f v trate-das a Rose burner located within the firebox, but it will be "understood that; any 1 form of oil "or gasl'iuiineriiiayybeemployed, r or that. the. fire box'rnay be provided witha suitable grate to support hard fuel such as coal.

Desirably the air, which is admitted to the fire-box to support combustion, is preheated, and for this purpose an air inlet conduit 10 extends downwardly and inwardly through the section 5 ofthe stack and the extension 4 of the base of the heating apparatus. The end portion of this air inlet conduit 10 desirably is provided with a series of apertures 11 to admit the air, and a cap 12 having. a downwardly extending skirt provided with apertures adapted to register with the apertures 11 and which may-be adjusted to vary the amount of air admitted into the conduit in accordance with the requirementsof the burner. i

The fire-box desirably,but not necessarily, is of cylindrical form having an .inner wall 13 and a plurality of surrounding walls 14, 15, and 16, parallel to or concentric with the wall'13, depending upon the shape of the fire-box, the space between the walls 13-44 and the space between the walls 1516 forming respectively inner and outer water legs which desirably surround the fire-box and communicate with'each other at the top through conduits 17. The adjacent walls Hand 15 of the inner and. outer water. legs provides a flue 18 which communicates with the chamberof the base 1 which'communicates with the extension 4 leading .to'the stack." 7'

Converging conduits 19 extend preferably radially inwardly from the waterlegs and unite in and communicate withfia central column 20 which in turncommunicates with other portions of the heating. apparatus 'as will hereinafter more fully appear. The convergingconduits 19 in 'effectf'orm a spider at the upper end of the fire-box upon which suitable heating elements may be superimposed. The liquidto be heated desirably is introduced from a suitable source through an inlet port 21 leading to thelower portion a of the outer water leg.

In order to provide sufficient space above the top of the fire-box, which may be said to be represented by the converging conduits 19, one or more wallseetions are superimposed upon thewater legs of, the fire-box and a suitable cover is superimposed upon the upper end of the wall sections. This cover desirably'is in the form of a hollow dome .22 having a chamber 23 of suitable capacity and means are provided for causing acommunication of said dome with the column 20 at the centerof the spider formed by the converging conduits 19.- The periphcry of the dome desirably is provided with a downwardly extending flange 24 adapted to rest 'upon'the wall 16 of the outer water leg, or preferably uponwall sectionssuperimposed upon said water leg as will hereinafter more fully appear. The central por tion of the base or bottom of the dome 5 desirably is provided with a downwardly extending boss 25 which may. rest upon the upper end of the central column 20, or upon suitable sections of heating units which are superimposed thereupon.

The under surface of the bottom of the dome 23 provides a deflector forthe ascending flames and products of combustion and serves to direct them outwardly and down- .wardly into the flue 18 between'the inner and outer legs so that the products of combustionpass' from" the lower ends of the flue 18 into the hollow base 1 of the heating apparatus, thence upwardly through the sections 5 and 6 of the stack to the chimney.

In the preferred embodiment illustrated in Fig. 1 a plurality of wall sections are interposed between the upper endsof the water legs and the bottom of the hollow dome 5. These wall sections are made. detachable fromthe water legs, from each other, and

from the dome, so that they can be readily asinner and outer hollow walls 26 and, 27 may, be made separate, but desirably are connected at intervals by horizontal conduits 29, four of such conduits being illustrated herein. The connecting conduits desirablyare integral with the hollow inner and outer walls and comprise an upper horizontal passage 30 and a: lower horizontal passage 31 which communicate at their ends respectively withthe chambers 32 anc 33 of the outer and inner conduits'if Desirably this connection is provided with a horizontal aperture 34 which establishes communication between adjacent sections of the space 'or flue 28..which is located between the inner and outer hollow walls, asshown in Fig. 6. V

' Meansare provided for establishing communication between the chambers. of the inner. and outer walls '26and 27 and the inner andouter water legs. This is accomplished by providing suitable apertures in the connections 29 between-the inner and outer walls to receive push nipples 35 and 36, the push nipples 35 establishing .coininunicationfbe tween. thewaterle s and both the chambers of tneinner and outer walls. 'Other push nipples 36 establish communication between the chambers of. superimposed wall sections,

while push nipples 37 may be provided to .establish communication bet-ween the uppermost of the superimposed hollow wall secdome 5.

tions andrthe chamber 2310f the hollow .By virtue of this Construction a free circulation is provided-from the waterllegs which surround the fire box;upwardly through the superimposed "wall sections and the dome. The heated liquid or the vapors therefrom may be delivered through a delivery conduit 38 from the upper portion of the dome. a

Any suitable meansmay be provided for securing the superimposed wall sections and the dome together. I ,Desirably similar lugs 39- extend laterally from the water legs, tlie wall sections and the dome and are secured together by'bolts 40. 111 order to provide a maxiniumheating surface for the liquid one or preferably a plurality of heating units ll are superimposed upon the central column 20v and connected by push nipples to. provide a central conduit leading from the column of the water legs to the dome; r

In the preferred embodiment of the invention the heating units comprise: a pluralityof, hollow, preferably radially disposed, chain- 'bers 42 extending outwardly from the central column into the space above" the fire-box which. is enclosed by the wall sections and 27. The central portions of these heating units are provided with annular thickened bosses 43 which engage each otlier and the lowermost of which'restsupon a boss 4a forming the wall of the column 20. The lower wallof the dome 5 is provided with a downwardlyextending boss'{l5 which rests upon the upper boss {13 of the upperheating unit.

A clamping:rod l6',whichiis secured at its lower end upon athickened portion or -b'oss 4T centrally of tlie spider, hasat its upper end a. clampinglbi'acl'zet or spiderl8 which isengage'd-by a nut 49 fupon the upper end of the -rod'.==*Pu'sh nipples 50', which are respecti-vely-forced into cylindrical apertures in the bosses 43, 44, and'45,'serve to rovi-de a central conduit leading directly trom 1' the 7 water legs to the dom'e' and communicating V witheach o f'the superimposed heat-ingunits.

virtue of the construct-ion abo'vedescribed a sectionalheating apparatus is provided which can be "readily constructed and assembled and in which the pa-rtsmayf-be readily removed and replaced. A maximum heat-absorbingsurtace is presented-to the.

flames and'the products of combustion. In the operation of the device liquid may be introduced at "a predetermined rate through the inlet21 into theouter w'aterlleg from' whichit. will circulatethrough the inner and outerwat'erjlegsand will thence pass upwardly into v the dome through the central hollow columnby virtueof the greater heat applied-to the water through "the, walls 19" ofthehspider and the heating units 27. The water from the dome will circulatedown wardly throughthe' chambers of the side chambers 420i the heating units and impinge upon the bottom of the dome 5, thereby sup- ,e'flici'ency of the burner.

1 1: A sectional liquid comprising inner and outer chambered r. spacedapart" to provide a flue therebetween, V conduits coii mu'nicating with fsaid water leg and i'the 'ch ainbers of said walli'sections,

walls intothe waterlegs, thereby providing from'the firebox surround the wallsof the plying alarge amount of heat to the liquid in the chamber of the dome. The products of combustion arefdeflected by the bottom of the dome downwardly through the flues 280i the wall section thence iiitotheflue 18 and pass therefrom through the hollow base a of the heating apparatus and thence through the stack to the chimney. I The heatfrom the hot productsof combustion, during the down-i ward passage through the flue, is absorbed by theliquidin the chambers 32 and 33 ofthe wall sections and by the liquid in the water legs, which surroundthe fire-box; Thus a maxiinun ainount' of heatis'absorbed by the liquid. from the products of combustion and lot thebase extension and the stack section 5'islargely utilized to heat the air which is suppliedto the burn'er, thereby increasing the It will be understood such heat as passes into the' hollow chamber 7 that the; particular embodiment of the invention disclosed herein is of an illustrative character and is notrrestrictive, and that various changes" in form, construction. and arrangement of parts'inay be made within the spirit. and scope ofthe' following claims.

- Having thusdescribed'theinvention, what is claimed as new, and desired by Letters Patent, is:

comprising affire-boxrzhaving' a water leg,

tralihollow column, a wall sectionfsuperimf to. secured heating apparatus posednpon said water leg comprising inner.

and. outer communicating chambered walls spaced apnea provide a flues-therebetween, conduits, communicating with said water leg andthechambers of saidiwall section, achanibered dome superimposed.iiipon said 'wall .section adapted to direct the products o-fc'ombustion downwardly into'said flue, means-respectively establishing communication, 'between-said domeand sa d cent-ralcolumn and said water leg, and: means to direct the prod? nets, of combustion from said flue to astacln 2. A sectional liquid fheating j apparatus 7 comprising a fire-box having aewater l eg, condiiits,;comprisingj spider converging from: the upperfen'd oftlie water leg into acentral hollow coluinmaheating unit having a plu f ralityfof laterally extending chambers'co iimunic atingwithsaid hollowcolumn,a wall i section superimposed upon said were chambered dome superimposed upon said wall sections and communicating with the chambers of said wall sections and sand central holiow column and having means to direct the products of combustion down-,

wardly into said flue, and means for directing the products of combustion from said flue to a stack.

3. A sectional liquid heating apparatus comprising a fire-box having a water leg, con-. duits forminga spider converging from the upper end of said water leg into a central hollow column, a plurality of superimposed de- -a chambered dome superimposed upon the a heating unit mounted upon tachably connected wall sections superimposed upon said water leg comprising inner :and outer communicating chambered walls spaced apart to providea flue therebetween,

a chambered dome superimposed upon the upper wall section,'adapted to direct the products of combustion downwardly to said flue, a heating unit mounted upon said spider having radially ext-ending chambers com- -municating with said hollow column, and

means respectively establishing communication between said dome and said hollow column and the chambers of said wall sections and said water leg, and means for conducting the products of combustion from the flue to a stack. j

4. A sectional liquid heating apparatus comprising a firebox having a water leg, conduits forming a spider converging from the upper end of said water leg into a central hollow column, a plurality of superimposed detachably connected wall sections superimposed upon said water leg {comprising inner and outer communicating chambered walls spaced apart to provide a flue therebetween,

upper wall section adapted to direct the products of combustion downwardly to said flue, said spider and having radially extending chambers communicatingivith said hollow column, push nipples respectively connecting said dome to converging from the upper ends of said water legs into a central hollow'column, a wall section superimposed upon the outer water leg,

a chambered dome'superi'mposed upon said wall section adapted to direct the products of combustion downwardly to said flue, a heating unit presenting a large surfacearea and havin a plurality of liquid-containing chambers mounted upon said spider and communicating with said central column and said dome, a delivery conduit leading from said dome, and a stack communicating with the lower end of said flue. I i 6. A. sectional liquid heating apparatus comprising a hollow base,'a stack communicating therewith, a fire-box supported on said hollow base having inner and outer surrounding water legs spaced apart to provide a flue therebetweencommunicating with said hollow base, conduits, forming a spider, converging from the upper end of said water legs into a central hollow column, a wall section superimposed upon; the outer water leg, a chambered dome superimposed upon said wall section adapted to direct the products of combustion downwardly to said flue, a heating unit having a plurality of laterally extending chambers communicating with said central column and said dome, and a delivery conduit leading from said dome. 7. A sectional liquid heating apparatu comprising a fire-box having inner and outer surrounding water legs spaced apart to provide aflue therebetween, conduits, forming a spider, converging 'from the upper end of said water legs into a central, hollow column, a :wall section comprising inner and outer communicating chambered walls spaced apart and superimposed upon said water legs with the space between said walls forming acontinuation of said flue,aconduits communicating with said water legs andithe chambers of said walls,a chambereddome superimposed upon said wall section adapted to direct the products of combustion downwardly to. said flue, a heating unit mounted upon said spider,

and means for conducting liquid from said water legs to said heatingunit and said 7 dome. I

8. A sectional liquidheating apparatus comprising a fire box having inner, and outer surrounding water legs spaced apart to provide a flue therebetween, conduits, forming aspider, converging said waterlegs intoa central hollow column, a plurality of wall sections each comprising inner and outer communicating chambered walls 'spaced apart and superimposed upon said water legs' with the space between said walls. forming a continuation of said flue,

conduits communicating with said water legs and' 'the chambers of said wall sections, a chambered dome superimposed upon said wall sections adapted to direct the products of combustion'downwardly to saidflue,,a plurality of superimposedheating units mounted uporisaid spider, means for conducting the fromthe upper end of liquid from said water legs to said heating units. and said dome, and a delivery conduit leading from said dome.

9. A comprising a fire-box, having inner, and outer surrounding water-legs spaced apart-to provide a flue there'between, conduits, forming a spider, converging from the upper end of said water legs into a central hollow sectional liquid heating apparatus column, a plurality of superimposed, detachably connected, wall sections comprising inner and outer communicating chambered walls spaced apart, and superimposed upon,

and detachably connected to said water legs with the space betweensaid walls forming a continuation of said flue, push nipple conduits communicating with said water legs and the chambers of said walls, a chambered dome superimposed upon said wall adapted to direct the products of combustion down- 7 wardly to said flue, a heating unit mounted upon said spider, and push nipples respectively connecting saidheating unit to said central column and to said dome.

10. A sectional liquid heating apparatus comprising a fire-box having inner and outer v surrounding water legs spaced apart to provide a flue therebetween, conduits, forming a spider, converging from the upper end of said water legs into a central hollow colunm, a wall section comprising inner and outer chambered walls spaced apart and super- 7 section adapted to direct the products of combustion downwardly to said flue, means for conducting liquid from said water legs to said dome, and a delivery conduit leading from said dome. I i 11. A sectional liquid heating apparatus comprising a fire-box having inner and outer surroundlng water legs spaced apart to provide a flue therebetween, conduits, forming a spider, converging from the upper end of said water legs into a central hollow column, a wall section comprising inner and outer chambered walls spaced apart and superimposed upon said water legs with the space between said walls forming a continuation of said flue, a plurality of conduits integral with and connecting said inner and outer walls, and having apertures extending horizontally therethrough communicating with the space between said walls, push nipples communicating with said water legs and said conduits, a chambered dome superimposed upon said wall section adapted to direct the products of combustion downwardly to said flue, a push nipple communicating with said hollow column and said dome, means for conducting liquid from said water legs to said dome, and a delivery conduit leading from said dome.

12. A sectional liquid heating apparatus comprising a fire-box having inner andouter surrounding water legs spaced apart to provide a flue therebetween, conduits, forming a spider, converging from the upper end of said water legs into a central hollow'column, V a wall section comprising inner and outer chambered walls spaced apart and superimposed upon said water legs withthe space I between said walls forming a continuation of said flue, a plurality of conduits integral with andconnecting said inner and outer walls, push nipples communicating'withsaid ,water legs and said conduits, achambered dome superimposed upon saidwall section downwardly to said fiue,. a heating unit mounted upon said spider, push nipples respectively connecting said heating unit to said central column and said dome, and a delivery conduit leadlng from sa1d dome.

13. A sectionalliquidheating apparatus comprising a hollow base, a stack communieating therewith, a fire-box supported on said hollow base having lnner' and outer sur rounding waterlegs spaced apart to provide a flue therebetween communicating with said hollow base, an air inlet conduit extending through a section of said stack and communicating withsaid fire-box, conduits, forming a spider, converging from the: upper end of said water legs into a central column, a ho1-- 14. A sectionalliquid heating apparatus comprising a fire-box having inner and outer surrounding water legs'spaced apart to p,ro-' vide a flue therebetween, conduits, forming a spider, converging from the upper end of said water legs into a central hollowcolumn,

a plurality of superimposed wall sections comprising inner and outer communicating chambered walls spaced apart and superimposed upon said water legs with the space between said walls forming a continuation of said flue, conduits communicating with said water legs and the chambers of said walls, a chambered dome superimposed upon said wall sections adapted to direct the products of combustion downwardly to'said flue, a plurality of heating units superimposed upon a said spider, push nipples connecting said" heating units together and to said column and said dome, a clamping rod anchored at its lower end in said spider and having at its upper end means detachably engagingthe under wall of said dome adapted'detachably to clamp said dome, heating units and spider. together. v

In testimony whereof, I have signed my name to this specification.

WILLIAM cnoss.

75 adapted to-direct the products of combustion a 

